The cobnuts and filberts in the garden are too young to produce any nuts this year so I was really surprised to see a load of hazelnuts on the lawn. My kids had picked them up on the way home from a large tree at the end of the street that I had never noticed before. Thinking my luck was in I went and collected a few handfuls and separated them from their outer sheaths. It took me a good half an hour to get them all out only to find that thet were all empty! I'm not sure, but I'm guessing that it is because they weren't pollinated. I'll keep an eye on the tree and see if once my trees are bigger they are close enough to pollinate it.